Cecelia is very, very weird to me... What about
Cecilia?
Cynthia is nice, but not Thia imho.
Celia is ok. Ceci and
Cindy are nmsaa either.
I would choose
Cecilia without a nn.
~~ Claire ~~
My ! are Alia, Eidel, Enola, Israel, Dudel, Yuri, Lina, Lorelei, Leilani, Owen, Julian, Glorinda, Mirinda
My ? are Hillel, Meshullam, Johnny, Ginny, Cordelia, Fiammetta, Yocheved
My ~ are Tehila, Tilda, Hailey, Gillian, Huldah
My / are Aglaia and July